If '+' means '-', '-' means '×', '×' means '÷' and '÷' means '+', what will come in place of the question mark (?) in the following equation?
18 × 3 - 15 ÷ 10 + 20 = ?
1
60
2
80
3
40
4
20
If '+' means '-', '-' means '×', '×' means '÷' and '÷' means '+', what will come in place of the question mark (?) in the following equation?
18 × 3 - 15 ÷ 10 + 20 = ?